Home / 40,120.35-55,366.94-21,971.83

Finding the Fourth Proportional to 40,120.35, 55,366.94 and 21,971.83

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Solution

The fourth proportional to 40,120.35, 55,366.94 and 21,971.83 is: 30,321.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,120.35 : 55,366.94 = 21,971.83 : x
  2. Step 2: Convert to fraction form
    40,120.35/55,366.94 = 21,971.83/x
  3. Step 3: Cross multiply
    40,120.35x = 55,366.94 × 21,971.83
  4. Step 4: Simplify right side
    40,120.35x = 1,216,512,993.30
  5. Step 5: Solve for x
    x = 1,216,512,993.30/40,120.35
  6. Step 6: Final answer
    x = 30,321.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.